Add ticket time tracking with reports and entry management.

Support start/stop timer, manual durations, grouped reports, and per-ticket edit/delete of time entries with undo.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/ui/views/timeentries.go

@@ -0,0 +1,181 @@
+package views
+
+import (
+	"fmt"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/charmbracelet/lipgloss"
+
+	"task/internal/ticket"
+)
+
+// TimeEntriesStyles holds styles for the time-entry list.
+type TimeEntriesStyles struct {
+	Title    lipgloss.Style
+	Row      lipgloss.Style
+	Selected lipgloss.Style
+	Meta     lipgloss.Style
+	Total    lipgloss.Style
+	Hint     lipgloss.Style
+	Empty    lipgloss.Style
+}
+
+// TimeEntriesView lists time entries for one ticket.
+type TimeEntriesView struct {
+	TicketTitle string
+	Entries     []ticket.TimeEntry
+	Total       time.Duration
+	Cursor      int
+	Offset      int
+	Width       int
+	Height      int
+	Styles      TimeEntriesStyles
+}
+
+// NewTimeEntriesView builds a sorted (newest first) entry list.
+func NewTimeEntriesView(title string, entries []ticket.TimeEntry, width, height int, styles TimeEntriesStyles) TimeEntriesView {
+	cp := append([]ticket.TimeEntry(nil), entries...)
+	sort.Slice(cp, func(i, j int) bool {
+		return cp[i].Start.After(cp[j].Start)
+	})
+	var total time.Duration
+	for _, e := range cp {
+		total += e.Duration
+	}
+	v := TimeEntriesView{
+		TicketTitle: title,
+		Entries:     cp,
+		Total:       total,
+		Width:       width,
+		Height:      height,
+		Styles:      styles,
+	}
+	v.ensureVisible()
+	return v
+}
+
+// SetSize updates viewport size.
+func (v *TimeEntriesView) SetSize(width, height int) {
+	v.Width = width
+	v.Height = height
+	v.ensureVisible()
+}
+
+// Selected returns the highlighted entry.
+func (v TimeEntriesView) Selected() (ticket.TimeEntry, bool) {
+	if len(v.Entries) == 0 || v.Cursor < 0 || v.Cursor >= len(v.Entries) {
+		return ticket.TimeEntry{}, false
+	}
+	return v.Entries[v.Cursor], true
+}
+
+// Len returns the number of entries.
+func (v TimeEntriesView) Len() int { return len(v.Entries) }
+
+// MoveDown moves selection down.
+func (v *TimeEntriesView) MoveDown() {
+	if v.Cursor < len(v.Entries)-1 {
+		v.Cursor++
+		v.ensureVisible()
+	}
+}
+
+// MoveUp moves selection up.
+func (v *TimeEntriesView) MoveUp() {
+	if v.Cursor > 0 {
+		v.Cursor--
+		v.ensureVisible()
+	}
+}
+
+// View renders the list.
+func (v TimeEntriesView) View() string {
+	title := strings.TrimSpace(v.TicketTitle)
+	if title == "" {
+		title = "ticket"
+	}
+	head := v.Styles.Title.Render(fmt.Sprintf("Time entries · %s", truncateOneLine(title, max(8, v.Width-20))))
+	hint := v.Styles.Hint.Render("j/k navigate · e edit · x delete · esc back")
+
+	innerW := max(20, v.Width-2)
+	var lines []string
+	lines = append(lines, head, "")
+
+	visibleH := v.Height - 4
+	if visibleH < 1 {
+		visibleH = 1
+	}
+
+	if len(v.Entries) == 0 {
+		lines = append(lines, v.Styles.Empty.Render("No time entries for this ticket"))
+	} else {
+		end := v.Offset + visibleH
+		if end > len(v.Entries) {
+			end = len(v.Entries)
+		}
+		for i := v.Offset; i < end; i++ {
+			line := formatEntryLine(v.Entries[i], innerW)
+			if i == v.Cursor {
+				line = v.Styles.Selected.Render(line)
+			} else {
+				line = v.Styles.Row.Render(line)
+			}
+			lines = append(lines, line)
+		}
+	}
+
+	for len(lines) < visibleH+2 {
+		lines = append(lines, "")
+	}
+
+	totalLabel := "Total"
+	totalDur := ticket.FormatDurationHuman(v.Total)
+	totalLine := totalLabel + dotsPad(totalLabel, totalDur, innerW) + totalDur
+	lines = append(lines, v.Styles.Total.Render(totalLine), hint)
+
+	body := strings.Join(lines, "\n")
+	return lipgloss.NewStyle().Width(v.Width).Height(v.Height).Render(body)
+}
+
+func formatEntryLine(e ticket.TimeEntry, width int) string {
+	when := e.Start.Local().Format("2006-01-02 15:04")
+	if e.Start.IsZero() {
+		when = "—"
+	}
+	dur := ticket.FormatDurationHuman(e.Duration)
+	src := e.Source
+	if src == "" {
+		src = "?"
+	}
+	left := when + "  ·  " + dur + "  ·  " + src
+	return truncateOneLine(left, width)
+}
+
+func (v *TimeEntriesView) ensureVisible() {
+	if len(v.Entries) == 0 {
+		v.Offset = 0
+		v.Cursor = 0
+		return
+	}
+	if v.Cursor < 0 {
+		v.Cursor = 0
+	}
+	if v.Cursor >= len(v.Entries) {
+		v.Cursor = len(v.Entries) - 1
+	}
+	visibleH := v.Height - 4
+	if visibleH < 1 {
+		visibleH = 1
+	}
+	if v.Cursor < v.Offset {
+		v.Offset = v.Cursor
+	}
+	if v.Cursor >= v.Offset+visibleH {
+		v.Offset = v.Cursor - visibleH + 1
+	}
+	if v.Offset < 0 {
+		v.Offset = 0
+	}
+}